Improved adjustable tuyere



UNITED STATES PATENT OFFicE.

BUTLER G. NOBLE, OF NEW YORK, N. Y.

IMPROVED ADJUSTABLE TUYERE.

Specification forming part of Letters Patent No. 48,974, dated July 25,1865.

" To all 'whom t may concern Be it known that I, BUTLER G. NOBLE, of thecity and State ot' New York, have invented. made, and applied to use acertain new and useful Improvement in T uyeres 5 and I do hereby declarethe following to be a full, clear, and exact description of the saidinvention, refer ence being had to the annexed drawings, inaking` partof this specification, wherein- Figure l is a plan of my improvedtuyere. Fig. 2 is a vertical section ofthe same, lengthwise of thesteam-pipe; and Fig. 3 is a similar section, representing a variation inthe said tuyere.

Similar marks of reference denote the same parts.

Tuyeres and steam-blowers for furnaces have heretofore been made inwhich the blast is produced by a jet of steam, either superheated ornot, passing through an opening and drawing air in with it to supply theoxygen required for a perfect combustion of the fuel, as may be seen inLetters Patent granted in Great Britain,June 23,1S45,to William Pollard.In all these instances no device has been provided for regulating therelative proportion of steam and air.

The nature of lny said invention consists in adjusting the position ofthe steam-nozzle re1- atively'to the air-openingsurronndingit, whereby lam enabled to regulate the ire in the speed of its combustion by therelative proportion of steam and air admitted.

In distilling, dyeing, and many metallurgi- `cal and chemical operationsthe temperature has to be regulated with great care, and sometimessuddenly reduced. My improvement enables me to et'ect this with greatfacility, because the lire can be almost immediately extinguished bymoving the nozzle so as to exclude the atmosphere and only allow steamto pass in.

In the drawings, a represents a portion of the furnace-wall, throughwhich is a tapering opening, b, which may be round and conical,

as in Fig. 3, or the said opening may be elongated in a pyramidal orwedge form, as seen in Figs. l and 2.

c is a steam-pipe from any desired generator, and the steam may besuperheated or not, and under any desired pressure.

d is a pipe extending from c to the tuyere e, from which the steamissues in a small jet, as in Fig. 3, orin a thin sheet, asili Figs. 1and 2, and passing through the tapering or inclined opening?) draws inthe atmospheric air in the required portion. The pipe land tuyere ebeing movable the tuyere e can be made to close the opening b and deadenthe tire by the action of the steam, or be drawn away to allow a largeproportion ot air to pass in with the steam, so as to cause the iire toburn 1ntensely.

The adjustmentof thetuyere may be effected by competent means. I haveshown a screw and hand-wheel,f, in Fig. 3, and a lever, g, in Figs. 1and 2, to effect this movement.

Vhat I claim, and desire to secure by Letters Patent, is-

The method of regulating the quantity of air relative to steam byadjusting the steam-jet or tuyere within the opening for the air,substantially as and for the purposes specified.

In witness whereof I have hereunto set my signature this 19th day ofMay, 1865.

B. G. l NOBLE.

Witnesses:

SAMUEL W. SERRELL, GHAs. H. SMITH.

